Cellular senescence is a fundamental process that may play positive or detrimental roles for the organism. It is involved in tissue development and in tumor prevention although during aging is becoming a detrimental process contributing to the decline of tissue functions. In previous investigations, we have uncovered a better capacity to detect DNA damage in cells from long-lived mammals. Here, we report that cultured cells derived from long-lived species have a higher propensity to undergo senescence when challenged with DNA damage than cells derived from short-lived species. Using a panel of cells derived from six mammals, which range in lifespan from 3-4 years up to 120 years, we examined cell cycle response, induction of apoptosis and of cellular senescence. All species exhibited a cell cycle arrest while induction of apoptosis was variable. However, a significant positive correlation was found between the relative percent of cells, within a population which entered senescence following damage, and the lifespan of the species. We suggest that cellular senescence may have a positive role during development allowing it to contribute to the evolution of longevity.
A pro longevity role for cellular senescence / Amany Attaallah, Monia Lenzi, Silvia Marchionni, Giacomo Bincoletto, Veronica Cocchi, Eleonora Croco, Patrizia Hrelia, Silvana Hrelia, Christian Sell, Antonello Lorenzini. - In: GEROSCIENCE. - ISSN 2509-2715. - ELETTRONICO. - 42:3(2020), pp. 867-879. [10.1007/s11357-019-00066-2]
A pro longevity role for cellular senescence
Monia LenziInvestigation
;Silvia MarchionniData Curation
;Veronica CocchiInvestigation
;Patrizia HreliaWriting – Review & Editing
;Silvana HreliaWriting – Review & Editing
;Antonello Lorenzini
Writing – Original Draft Preparation
2020
Abstract
Cellular senescence is a fundamental process that may play positive or detrimental roles for the organism. It is involved in tissue development and in tumor prevention although during aging is becoming a detrimental process contributing to the decline of tissue functions. In previous investigations, we have uncovered a better capacity to detect DNA damage in cells from long-lived mammals. Here, we report that cultured cells derived from long-lived species have a higher propensity to undergo senescence when challenged with DNA damage than cells derived from short-lived species. Using a panel of cells derived from six mammals, which range in lifespan from 3-4 years up to 120 years, we examined cell cycle response, induction of apoptosis and of cellular senescence. All species exhibited a cell cycle arrest while induction of apoptosis was variable. However, a significant positive correlation was found between the relative percent of cells, within a population which entered senescence following damage, and the lifespan of the species. We suggest that cellular senescence may have a positive role during development allowing it to contribute to the evolution of longevity.File | Dimensione | Formato | |
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